<template>
  <div class="user-info-head" @click="editCropper()">
    <img
      :src="options.img as string"
      title="点击上传图片"
      class="img"
      v-if="options.img"
    />
    <div class="w-120 h-120 f-c-c flex-col" v-else>
      <el-icon class="el-icon--upload font-size-30"><upload-filled /></el-icon>
      <div>点击上传</div>
    </div>
    <el-dialog
      :title="options.img ? '修改图片' : '上传图片'"
      v-model="open"
      width="800px"
      append-to-body
      @opened="modalOpened"
      @close="closeDialog"
    >
      <el-row>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <vue-cropper
            ref="cropper"
            :img="options.img"
            :info="true"
            :autoCrop="options.autoCrop"
            :autoCropWidth="options.autoCropWidth"
            :autoCropHeight="options.autoCropHeight"
            :fixedBox="options.fixedBox"
            :outputType="options.outputType"
            @realTime="realTime"
            v-if="visible"
          />
        </el-col>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <div class="avatar-upload-preview">
            <img :src="options.previews.url" :style="options.previews.img" />
          </div>
        </el-col>
      </el-row>
      <br />
      <el-row>
        <el-col :lg="2" :md="2">
          <el-upload
            action="#"
            :http-request="requestUpload"
            :show-file-list="false"
            :before-upload="beforeUpload"
          >
            <el-button>
              选择
              <el-icon class="el-icon--right">
                <Upload />
              </el-icon>
            </el-button>
          </el-upload>
        </el-col>
        <el-col :lg="{ span: 1, offset: 2 }" :md="2">
          <el-button icon="Plus" @click="changeScale(1)"></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="Minus" @click="changeScale(-1)"></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="RefreshRight" @click="rotateRight()"></el-button>
        </el-col>
        <el-col :lg="{ span: 2, offset: 6 }" :md="2">
          <el-button type="primary" @click="uploadImg()">提 交</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script setup lang="ts" name="CropperImage">
import { ElMessage } from 'element-plus'
import 'vue-cropper/dist/index.css'
import { VueCropper } from 'vue-cropper'
import { reqUploadFile } from '@/api/oss'

interface Options {
  img: string | ArrayBuffer | null // 裁剪图片的地址
  autoCrop: boolean // 是否默认生成截图框
  autoCropWidth: number // 默认生成截图框宽度
  autoCropHeight: number // 默认生成截图框高度
  fixedBox: boolean // 固定截图框大小 不允许改变
  fileName: string
  previews: any // 预览数据
  outputType: string
  visible: boolean
}

const open = ref(false)
const visible = ref(false)

const cropper = ref<any>({})

const props = defineProps({
  modelValue: null,
  autoCropWidth: {
    type: Number,
    default: 350,
  },
  autoCropHeight: {
    type: Number,
    default: 200,
  },
})
const emits = defineEmits(['update:modelValue'])
//图片裁剪数据
const options = reactive<Options>({
  img: '',
  autoCrop: true,
  autoCropWidth: 0,
  autoCropHeight: 0,
  fixedBox: true,
  outputType: 'png',
  fileName: '',
  previews: {},
  visible: false,
})
watchEffect(() => {
  options.img = props.modelValue
  options.autoCropHeight = props.autoCropHeight
  options.autoCropWidth = props.autoCropWidth
})
/** 编辑头像 */
const editCropper = () => {
  open.value = true
}
/** 打开弹出层结束时的回调 */
const modalOpened = () => {
  visible.value = true
}
/** 覆盖默认上传行为 */
const requestUpload = () => {
  return new XMLHttpRequest()
}
/** 向左旋转 */
const rotateLeft = () => {
  cropper.value.rotateLeft()
}
/** 向右旋转 */
const rotateRight = () => {
  cropper.value.rotateRight()
}
/** 图片缩放 */
const changeScale = (num: number) => {
  num = num || 1
  cropper.value.changeScale(num)
}
/** 上传预处理 */
const beforeUpload = (file: any) => {
  if (file.type.indexOf('image/') == -1) {
    ElMessage.error('文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。')
  } else {
    const reader = new FileReader()
    reader.readAsDataURL(file)
    reader.onload = () => {
      options.img = reader.result
      options.fileName = file.name
    }
  }
}
/** 上传图片 */
const uploadImg = async () => {
  cropper.value.getCropBlob(async (data: any) => {
    let formData = new FormData()
    formData.append(
      'file',
      data,
      options.fileName ? options.fileName : props.modelValue,
    )
    const res = await reqUploadFile(formData)
    open.value = false
    options.img = res.data.url
    emits('update:modelValue', options.img)
    ElMessage.success('修改成功')
    visible.value = false
  })
}
/** 实时预览 */
const realTime = (data: any) => {
  options.previews = data
}
/** 关闭窗口 */
const closeDialog = () => {
  options.visible = false
}
</script>

<style lang="scss" scoped>
.user-info-head {
  position: relative;
  display: inline-block;
  width: 350px;
  height: 200px;
}

.user-info-head:hover:after {
  content: '+';
  text-align: center;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  color: #eee;
  background: rgba(0, 0, 0, 0.5);
  font-size: 24px;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: pointer;
  line-height: 200px;
}

/* image */

.img {
  width: 350px;
  height: 200px;
}
.avatar-upload-preview {
  position: absolute;
  top: 50%;
  transform: translate(5%, -50%);
  width: 350px;
  height: 200px;
  box-shadow: 0 0 4px #ccc;
  overflow: hidden;
}
</style>
